Vehicle seat

Abstract

In order to prevent distortion of slide rails caused by an urging force generated by an urging member in a vehicle tumble seat, a vehicle seat is capable of taking a stowed position in which a seat back 6 L is folded onto a seat cushion 5 L and the seat cushion 5 L together with the folded seat back 6 L is rotatably lifted away from a floor 3 , and the vehicle seat is configured to include: a support member 31 coupled to the floor; a rotating member 33 L rotatably supported by the support member via a support shaft extending in a right-left direction; a lower rail 41 extending in a front-rear direction and coupled at an end to the rotating member so as to be extend literally offset relative to the support shaft; an upper rail 42 slidably supported by the lower rail and coupled to the seat cushion; a coupling device 51 provided at a second end of the lower rail on a side toward the support shaft and capable of selectably connecting to the floor; and an urging device 60 extending the front-rear direction and having one end coupled to the support member and a second end coupled to the lower rail on the side toward the support shaft side, wherein the urging device is configured to be expandable and contractible in a longitudinal direction thereof so as to urge the seat cushion in such a direction as to rotate about the support shaft away from the floor.

The invention claimed is: 
     
       1. A vehicle seat including a seat cushion and a seat back rotatably attached to the seat cushion, wherein the vehicle seat is capable of taking a stowed position in which the seat back is folded onto the seat cushion and the seat cushion together with the folded seat back is rotatably lifted away from a floor, the vehicle seat comprising:
 a support member coupled to the floor and supporting the seat cushion rotatably via a support shaft extending in a right-left direction; 
 a coupling device provided at the seat cushion and capable of selectably connecting to the floor; and 
 an urging device extending in a front-rear direction and having one end coupled to the support member and a second end coupled to the seat cushion, 
 wherein the urging device is configured to be expandable and contractible in a longitudinal direction thereof so as to urge the seat cushion in such a direction as to rotate about the support shaft away from the floor, 
 wherein the seat cushion includes a pair of right and left cushion side frames extending in the front-to-rear direction, a front member crossing and connecting respective front end portions of the cushion side frames, a rear member crossing and connecting respective rear end portions of the cushion side frames, and an intermediate member crossing and connecting respective intermediate portions between the respective front and rear end portions of the cushion side frames, 
 wherein a rear end of the support member is located rearward relative to the inter mediate member. 
 
     
     
       2. The vehicle seat according to  claim 1 , further comprising:
 a rotating member rotatably supported by the support member via the support shaft; 
 a lower rail extending in the front-rear direction and coupled at an end to the rotating member; and 
 an upper rail slidably supported by the lower rail and coupled to one of the cushion side frames, 
 wherein an upper end of the upper rail is located below an upper end of the support member. 
 
     
     
       3. The vehicle seat according to  claim 1 , further comprising:
 a rotating member rotatably supported by the support member via the support shaft; 
 a lower rail extending in the front-rear direction and coupled at an end to the rotating member; and 
 an upper rail slidably supported by the lower rail and coupled to one of the cushion side frames, 
 wherein the support shaft is located above a lower end of the lower rail. 
 
     
     
       4. The vehicle seat according to  claim 1 , wherein a front of the cushion side frame is located frontward relative to a front end of the support member. 
     
     
       5. The vehicle seat according to  claim 3 , wherein the coupling device overlaps with the rotating member when viewed from the front. 
     
     
       6. The vehicle seat according to  claim 3 , wherein the coupling device is located within an inner region of the vehicle seat in a right-left direction respect to the lower rail. 
     
     
       7. The vehicle seat according to  claim 3 , wherein the coupling device includes a latch configured to be engageable with a striker provided on the floor, and the striker is located frontward relative to a rear end of the lower rail in the front-rear direction. 
     
     
       8. The vehicle seat according to  claim 1 , wherein a rear end of the urging device is located between the intermediate member and the rear member in the front-rear direction. 
     
     
       9. The vehicle seat according to  claim 1 , further comprising a rotating member rotatably supported by the support member via the support shaft and coupled to the seat cushion, a rear end of the rotating member is located rearward relative to the intermediate member. 
     
     
       10. The vehicle seat according to  claim 1 , wherein a rear end of the urging device is located between an upper end of the coupling device and a lower end of the coupling device in an up-down direction. 
     
     
       11. The vehicle seat according to  claim 3 , wherein a lower part of a front end of the cushion side frame is provided with an inclined surface that slopes upward toward the front, and a space is formed between the inclined surface and the lower rail. 
     
     
       12. The vehicle seat according to  claim 11 , wherein a front end of the urging device is located under the space when viewed in the right-left direction. 
     
     
       13. The vehicle seat according to  claim 11 , wherein the space is located frontward relative to the intermediate member. 
     
     
       14. The vehicle seat according to  claim 11 , wherein the space is located frontward relative to the intermediate member. 
     
     
       15. The vehicle seat according to  claim 11 , wherein a rotation axis of the seat back relative to the seat cushion is located frontward relative to a rear end of the coupling device. 
     
     
       16. The vehicle seat according to  claim 1 , further comprising:
 a rotating member rotatably supported by the support member via the support shaft; 
 a lower rail extending in the front-rear direction and coupled at an end to the rotating member; and 
 an upper rail slidably supported by the lower rail and coupled to one of the cushion side frames.